diff options
| -rw-r--r-- | drivers/serial/serial_sh.c | 8 | ||||
| -rw-r--r-- | drivers/serial/serial_sh.h | 4 |
2 files changed, 9 insertions, 3 deletions
diff --git a/drivers/serial/serial_sh.c b/drivers/serial/serial_sh.c index 0826d59ab2..144a925394 100644 --- a/drivers/serial/serial_sh.c +++ b/drivers/serial/serial_sh.c @@ -49,9 +49,15 @@ static struct uart_port sh_sci = { static void sh_serial_setbrg(void) { DECLARE_GLOBAL_DATA_PTR; - +#ifdef CONFIG_SCIF_USE_EXT_CLK + unsigned short dl = DL_VALUE(gd->baudrate, CONFIG_SH_SCIF_CLK_FREQ); + sci_out(&sh_sci, DL, dl); + /* Need wait: Clock * 1/dl × 1/16 */ + udelay((1000000 * dl * 16 / CONFIG_SYS_CLK_FREQ) * 1000 + 1); +#else sci_out(&sh_sci, SCBRR, SCBRR_VALUE(gd->baudrate, CONFIG_SH_SCIF_CLK_FREQ)); +#endif } static int sh_serial_init(void) diff --git a/drivers/serial/serial_sh.h b/drivers/serial/serial_sh.h index 4f3e22530f..fe8cde4ded 100644 --- a/drivers/serial/serial_sh.h +++ b/drivers/serial/serial_sh.h @@ -735,8 +735,8 @@ static inline int scbrr_calc(struct uart_port port, int bps, int clk) #elif defined(__H8300H__) || defined(__H8300S__) #define SCBRR_VALUE(bps, clk) (((clk*1000/32)/bps)-1) #elif defined(CONFIG_R8A7790) || defined(CONFIG_R8A7791) -#define SCBRR DL -#define SCBRR_VALUE(bps, clk) (clk / bps / 16) +#define DL_VALUE(bps, clk) (clk / bps / 16) /* External Clock */ +#define SCBRR_VALUE(bps, clk) ((clk+16*bps)/(32*bps)-1) /* Internal Clock */ #else /* Generic SH */ #define SCBRR_VALUE(bps, clk) ((clk+16*bps)/(32*bps)-1) #endif |